Quote:
Originally Posted by screamoon
I see a lot of Cooper At3 recommendations. I wonder if any of you with Cooper AT3's care about the speedometer offset that happens because of these tires?
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Speedometer offset will happen with any tire that is a different size than stock. Not just the Coopers.
One thing I did notice initially was that on stock tires my speedometer was reading a few MPH faster than I was traveling (according to GPS). When I switch to a slightly taller 275/70 the GPS and speedometer were almost perfectly in sync. Now that I am an even taller 285, the speedometer reads a few MPH slower than actual, which is to be expected with larger tires.